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How to Sound Proof your HT room (including base).

post #1 of 8
9/9/11 at 1:21am
Thread Starter 
Now, I looked around and not sure where to post this specific question.. please feel free to move it to the right forum...

Since I have decided to build the 4pis, and also maybe have up to 4 subwoofers.. how do i sound proof my room so that none of the 'reference level sounds' i'll be producing from my system escape my room and annoy the hell out of my neighbors (note: my house is a linked type, ie, shares the same wall with the next house. I know this is not typical of an American home where you usually live in bungalows).

Basically, is it even possible to block out or damp out 'super base'?? or, do they just go thru concrete like nothing's there... ?

I am thinking, if i can't sound proof my room, i'll not get to enjoy my system a lot since the neighbors are likely to call the cops on me...
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post #2 of 8
9/9/11 at 1:32am
Quote:
Originally Posted by coolgeek View Post

Now, I looked around and not sure where to post this specific question.. please feel free to move it to the right forum...

Since I have decided to build the 4pis, and also maybe have up to 4 subwoofers.. how do i sound proof my room so that none of the 'reference level sounds' i'll be producing from my system escape my room and annoy the hell out of my neighbors (note: my house is a linked type, ie, shares the same wall with the next house. I know this is not typical of an American home where you usually live in bungalows).

Basically, is it even possible to block out or damp out 'super base'?? or, do they just go thru concrete like nothing's there... ?

I am thinking, if i can't sound proof my room, i'll not get to enjoy my system a lot since the neighbors are likely to call the cops on me...

I think you mean BASS. Certainly the Low Frequency is the hardest to contain.
Put simply it vibrates everything. Best solution is room within a room.
Next best is isolation clips, Staggered Studs, Green Glue etc.
Try http://www.avsforum.com/avs-vb/forumdisplay.php?f=19
And http://www.soundproofingcompany.com/
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post #3 of 8
9/9/11 at 2:04am
Thread Starter 
Quote:
Originally Posted by crabra View Post

I think you mean BASS. Certainly the Low Frequency is the hardest to contain.
Put simply it vibrates everything. Best solution is room within a room.
Next best is isolation clips, Staggered Studs, Green Glue etc.
Try http://www.avsforum.com/avs-vb/forumdisplay.php?f=19
And http://www.soundproofingcompany.com/

Thanks, will check out greeglue... may have to import them into my country..

As for clips.. how do you use them? Say my room is upstairs... do i have to build a double layer floor? and double layer walls?
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post #4 of 8
9/9/11 at 5:03am
sound proofing is all about Mass, Mechanical Isolation, Dampening and Absorption.

Green glue is a constrained layer dampening agent and when applied between two/three layers of 5/8 drywall will reduce wall vibration (sound). For maximum isolation you should mount the drywall on a framing system that is isolated from the rest of the house so that no vibration is transferred to the outside walls which will turn your exterior walls into giant passive radiators. You should not have any windows and holes in the wall for lights and electrical boxes need to be addressed with putty pads or backer boxes.


One thing you need to be aware of that when using the room within a room design technique if your wall is already finished on the inside and outside that adding another separate layer creates a triple leaf and that can defeat your efforts, Spend a couple of hours and read the library of articles on soundproofingcompany.com
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post #5 of 8
9/9/11 at 5:20am
Well, the correct forum here is the Dedicated Theater Design sub-forum. You'll find a ton of helpful info there.
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post #6 of 8
9/9/11 at 6:06am
Also keep in mind that bass has 360 degree radiation and will go around any obstacle placed in its path. If you only soundproof one wall the bass will simply go around it.
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post #7 of 8
9/9/11 at 7:26am
Thread Starter 
Quote:
Originally Posted by BIGmouthinDC View Post

One thing you need to be aware of that when using the room within a room design technique if your wall is already finished on the inside and outside that adding another separate layer creates a triple layer and that can defeat your efforts, Spend a couple of hours and read the library of articles on soundproofingcompany.com

Why is a tripple layer bad?

Can I use the greenglue with plywood? I mean, create two layers of greenglue on plywoods sandwich.. then place them between my room and the outer wall.. same with the floor...

so it'l be: Concrete wall (the outer surface that is shared between my house and neighbor's) - empty space (about 1cm), then the Plywood-greenglue-plywood-greenglue-plywood sandwich, then wallpaper on the plywood so it looks good in the inner side.

Same with the floor, ie, concrete floor, then the same plywood sandwich above it (an inch)?

The problem is the windows...

Quote:
Originally Posted by Bill Fitzmaurice View Post

Also keep in mind that bass has 360 degree radiation and will go around any obstacle placed in its path. If you only soundproof one wall the bass will simply go around it.

but if i soundproof two walls, the floor, the leak from the windows would be sort of muted right? I mean, most of the energy of the bass would have dissipated already? or, would it be just as strong even with a small leakish area?
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post #8 of 8
9/9/11 at 9:16am
I had a typo it is triple leaf:
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